Global Patent Index - EP 0690455 A1

EP 0690455 A1 19960103 - Cylindrical body inspection apparatus

Title (en)

Cylindrical body inspection apparatus

Title (de)

Gerät zur Überprüfung von zylindrischen Gegenständen

Title (fr)

Appareil de contrÔle d'objets cylindriques

Publication

EP 0690455 A1 19960103 (EN)

Application

EP 95304144 A 19950615

Priority

JP 14680894 A 19940628

Abstract (en)

The present invention relates to a cylindrical body inspection apparatus characterized in comprising: a) rotating mechanism for supporting and rotating a cylindrical body; b) sensor comprising a light emitting unit for irradiating light onto a surface to be inspected of a cylindrical body, and a light detecting unit for detecting incoming light reflected from the surface to be inspected; this sensor detects displacement information corresponding to a displacement of distance from the surface to be inspected to the light detecting unit, and information regarding the quantity of incoming light corresponding to quantity of reflected light from the surface to be inspected; c) computing unit for computing surface information and external form information based on the above displacement information and information regarding quantity of incoming light from the sensor; and d) discriminating unit for discriminating the presence or absence of defects relating to shape of the cylindrical body based on the surface information and external form information obtained by means of the computing unit. <MATH>

IPC 1-7

G21C 17/06; G01N 21/88

IPC 8 full level

G01N 21/88 (2006.01); G01N 21/952 (2006.01); G06T 1/00 (2006.01); G21C 17/06 (2006.01)

CPC (source: EP US)

G01N 21/952 (2013.01 - EP US); G21C 17/06 (2013.01 - EP US); Y02E 30/30 (2013.01 - EP)

Citation (applicant)

JP H0666990 A 19940311 - MITSUBISHI NUCLEAR FUEL

Citation (search report)

  • [YA] EP 0048072 A2 19820324 - WESTINGHOUSE ELECTRIC CORP [US]
  • [A] FR 2337882 A1 19770805 - WESTINGHOUSE ELECTRIC CORP [US]
  • [A] EP 0588624 A1 19940323 - BRITISH NUCLEAR FUELS PLC [GB]
  • [DA] EP 0593156 A1 19940420 - MITSUBISHI NUCLEAR FUEL [JP]
  • [YA] PATENT ABSTRACTS OF JAPAN vol. 13, no. 358 (P - 916) 10 August 1989 (1989-08-10)
  • [A] PATENT ABSTRACTS OF JAPAN vol. 13, no. 480 (P - 952) 31 October 1989 (1989-10-31)
  • [A] PATENT ABSTRACTS OF JAPAN vol. 11, no. 370 (P - 642) 3 December 1987 (1987-12-03)
  • [A] DATABASE WPI Week 8646, Derwent World Patents Index; AN 86-301782
  • [A] PATENT ABSTRACTS OF JAPAN vol. 10, no. 72 (P - 438) 22 March 1986 (1986-03-22)
  • [A] PATENT ABSTRACTS OF JAPAN vol. 18, no. 281 (P - 1744) 27 May 1994 (1994-05-27)
  • [A] PATENT ABSTRACTS OF JAPAN vol. 16, no. 5 (P - 1295) 8 January 1992 (1992-01-08)

Designated contracting state (EPC)

BE DE FR GB

DOCDB simple family (publication)

EP 0690455 A1 19960103; EP 0690455 B1 20010919; DE 69522759 D1 20011025; JP 3333048 B2 20021007; JP H0815162 A 19960119; US 5652432 A 19970729

DOCDB simple family (application)

EP 95304144 A 19950615; DE 69522759 T 19950615; JP 14680894 A 19940628; US 46875695 A 19950606